1938885706 has 4 divisors (see below), whose sum is σ = 2908328562. Its totient is φ = 969442852.

The previous prime is 1938885673. The next prime is 1938885709. The reversal of 1938885706 is 6075888391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1485408681 + 453477025 = 38541^2 + 21295^2 .

It is a super-2 number, since 2×1938885706² = 7518555561862236872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1938885709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 484721425 + ... + 484721428.

Almost surely, 2^1938885706 is an apocalyptic number.

1938885706 is a deficient number, since it is larger than the sum of its proper divisors (969442856).

1938885706 is an equidigital number, since it uses as much as digits as its factorization.

1938885706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969442855.

The product of its (nonzero) digits is 2903040, while the sum is 55.

The square root of 1938885706 is about 44032.7799031585. The cubic root of 1938885706 is about 1246.9548717256.

The spelling of 1938885706 in words is "one billion, nine hundred thirty-eight million, eight hundred eighty-five thousand, seven hundred six".